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Mannatech Names Vice President of Global Human Resources

COPPELL, TX -- (MARKET WIRE) -- March 16, 2006 -- Mannatech, Inc. (NASDAQ: MTEX) today announced
that Robert Panico has been named Vice President of Global Human Resources.
Mr. Panico brings to Mannatech a wealth of both human resources and general
management experience, including a strong international background, having
lived and worked abroad for over ten years. Over a 23-year span, Bob has
held a number of positions within The Tetra Pak Group based in Lausanne,
Switzerland, and Amcor Packaging, based in Melbourne, Australia. Both
companies are market leaders in consumer packaging and processing for food,
beverage, health care, pharmaceuticals and nutritional products.

Terry Persinger, President and COO of Mannatech, stated, "We are extremely
pleased to welcome Bob to the Mannatech executive team. His international
experience in both human resources and sales/general management within
major growth-oriented companies will help drive Mannatech's global
organization in support of the growth our Associates are achieving around
the world."

Mannatech is listed on the NASDAQ National Market under the symbol "MTEX."
For over a decade, Mannatech has developed innovative, high-quality,
proprietary nutritional supplements, topical products and weight-management
products that are sold through a global network-marketing system throughout
the United States and the international markets of Canada, Australia, the
United Kingdom, Japan, New Zealand, Republic of Korea, Taiwan and Denmark.

Statements contained in this press release that are not historical facts
may be forward-looking statements within the meaning of the Private
Litigation Reform Act of 1995. Such statements may use words such as
"anticipate," "believe," "estimate," "expect," intent," "predict,"
"project" and similar expressions as they relate to Mannatech or our
management. When we make forward-looking statements, we are basing them on
our management's beliefs and assumptions, using information currently
available to us. Although we believe that the expectations reflected in the
forward-looking statements are reasonable, these forward-looking statements
are subject to risks, uncertainties and assumptions including the risks
discussed in our filings with the Securities and Exchange Commission. If
one or more of these risks materialize, or if our underlying assumptions
prove to be incorrect,
actual results may vary materially from what we projected. Any
forward-looking statements contained in this press release reflect our
current views with respect to future events and are subject to these and
other risks, uncertainties and assumptions relating to our operations,
results of operations, growth strategy and liquidity. We have no current
intention, and disclaim any obligation, to update or revise any
forward-looking statements, whether as a result of new information, future
results or otherwise.